EclipseTurbo
New Member
- Joined
- Jan 15, 2003
- Messages
- 102
After much testing, I believe a propane warmer is very much needed to get consistent results.
Here in CA, mid Feb, still getting about only 50F in the morning and night. This translate to roughtly 80-90 PSI propane pressure at the tank.
So it's no big deal if you only want to run 80 PSI propane pressure, right? Not really. What happens is after a couple of runs, the propane tank pressure will drop further (about 10 PSI) Now the pressure at the inlet is pretty much 80 PSI, which doesn't give much headroom for flow (read on)
What happens is when the solenoid opens, I think the pressure drops some more. At 80 PSI inlet, it will drop below 80 PSI, (still need a backseat rider to confirm, but I'm pretty sure that's what happens) now if you have 110 PSI or more (afternoon temperature for example) The pressure will be much more consistent, because the inlet pressure is still high enough to be supplying the outlet pressure.
I've had no knock when the inlet pressure is high. Let's say I tuned the car nicely in the afternoon, it will knock when cold because the pressure just isn't there, or consistently there.
So what is the solution? I believe it is the need of consistent inlet pressure. I believe a warmer that keeps the bottle roughly around 140+ PSI will be fantastic.. it does not need to be exact as the regulator will do the trick.
I talked to speedshop.org and he said he had one that will control via pressure feedback (fancy), but it's not fully tested, that is overkill because we use a regulator already. I think a simple, intermittent timed warmer will work just fine.
Here in CA, mid Feb, still getting about only 50F in the morning and night. This translate to roughtly 80-90 PSI propane pressure at the tank.
So it's no big deal if you only want to run 80 PSI propane pressure, right? Not really. What happens is after a couple of runs, the propane tank pressure will drop further (about 10 PSI) Now the pressure at the inlet is pretty much 80 PSI, which doesn't give much headroom for flow (read on)
What happens is when the solenoid opens, I think the pressure drops some more. At 80 PSI inlet, it will drop below 80 PSI, (still need a backseat rider to confirm, but I'm pretty sure that's what happens) now if you have 110 PSI or more (afternoon temperature for example) The pressure will be much more consistent, because the inlet pressure is still high enough to be supplying the outlet pressure.
I've had no knock when the inlet pressure is high. Let's say I tuned the car nicely in the afternoon, it will knock when cold because the pressure just isn't there, or consistently there.
So what is the solution? I believe it is the need of consistent inlet pressure. I believe a warmer that keeps the bottle roughly around 140+ PSI will be fantastic.. it does not need to be exact as the regulator will do the trick.
I talked to speedshop.org and he said he had one that will control via pressure feedback (fancy), but it's not fully tested, that is overkill because we use a regulator already. I think a simple, intermittent timed warmer will work just fine.
